summaryrefslogtreecommitdiffstats
path: root/drivers/serial/bfin_sport_uart.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/serial/bfin_sport_uart.c')
-rw-r--r--drivers/serial/bfin_sport_uart.c58
1 files changed, 31 insertions, 27 deletions
diff --git a/drivers/serial/bfin_sport_uart.c b/drivers/serial/bfin_sport_uart.c
index 529c0ff..34b4ae0 100644
--- a/drivers/serial/bfin_sport_uart.c
+++ b/drivers/serial/bfin_sport_uart.c
@@ -101,15 +101,16 @@ static inline void tx_one_byte(struct sport_uart_port *up, unsigned int value)
{
pr_debug("%s value:%x\n", __func__, value);
/* Place a Start and Stop bit */
- __asm__ volatile (
- "R2 = b#01111111100;\n\t"
- "R3 = b#10000000001;\n\t"
- "%0 <<= 2;\n\t"
- "%0 = %0 & R2;\n\t"
- "%0 = %0 | R3;\n\t"
- :"=r"(value)
- :"0"(value)
- :"R2", "R3");
+ __asm__ __volatile__ (
+ "R2 = b#01111111100;"
+ "R3 = b#10000000001;"
+ "%0 <<= 2;"
+ "%0 = %0 & R2;"
+ "%0 = %0 | R3;"
+ : "=d"(value)
+ : "d"(value)
+ : "ASTAT", "R2", "R3"
+ );
pr_debug("%s value:%x\n", __func__, value);
SPORT_PUT_TX(up, value);
@@ -118,27 +119,30 @@ static inline void tx_one_byte(struct sport_uart_port *up, unsigned int value)
static inline unsigned int rx_one_byte(struct sport_uart_port *up)
{
unsigned int value, extract;
+ u32 tmp_mask1, tmp_mask2, tmp_shift, tmp;
value = SPORT_GET_RX32(up);
pr_debug("%s value:%x\n", __func__, value);
/* Extract 8 bits data */
- __asm__ volatile (
- "R5 = 0;\n\t"
- "P0 = 8;\n\t"
- "R1 = 0x1801(Z);\n\t"
- "R3 = 0x0300(Z);\n\t"
- "R4 = 0;\n\t"
- "LSETUP(loop_s, loop_e) LC0 = P0;\nloop_s:\t"
- "R2 = extract(%1, R1.L)(Z);\n\t"
- "R2 <<= R4;\n\t"
- "R5 = R5 | R2;\n\t"
- "R1 = R1 - R3;\nloop_e:\t"
- "R4 += 1;\n\t"
- "%0 = R5;\n\t"
- :"=r"(extract)
- :"r"(value)
- :"P0", "R1", "R2","R3","R4", "R5");
+ __asm__ __volatile__ (
+ "%[extr] = 0;"
+ "%[mask1] = 0x1801(Z);"
+ "%[mask2] = 0x0300(Z);"
+ "%[shift] = 0;"
+ "LSETUP(.Lloop_s, .Lloop_e) LC0 = %[lc];"
+ ".Lloop_s:"
+ "%[tmp] = extract(%[val], %[mask1].L)(Z);"
+ "%[tmp] <<= %[shift];"
+ "%[extr] = %[extr] | %[tmp];"
+ "%[mask1] = %[mask1] - %[mask2];"
+ ".Lloop_e:"
+ "%[shift] += 1;"
+ : [val]"=d"(value), [extr]"=d"(extract), [shift]"=d"(tmp_shift), [tmp]"=d"(tmp),
+ [mask1]"=d"(tmp_mask1), [mask2]"=d"(tmp_mask2)
+ : "d"(value), [lc]"a"(8)
+ : "ASTAT", "LB0", "LC0", "LT0"
+ );
pr_debug(" extract:%x\n", extract);
return extract;
@@ -149,7 +153,7 @@ static int sport_uart_setup(struct sport_uart_port *up, int sclk, int baud_rate)
int tclkdiv, tfsdiv, rclkdiv;
/* Set TCR1 and TCR2 */
- SPORT_PUT_TCR1(up, (LTFS | ITFS | TFSR | TLSBIT | ITCLK));
+ SPORT_PUT_TCR1(up, (LATFS | ITFS | TFSR | TLSBIT | ITCLK));
SPORT_PUT_TCR2(up, 10);
pr_debug("%s TCR1:%x, TCR2:%x\n", __func__, SPORT_GET_TCR1(up), SPORT_GET_TCR2(up));
@@ -419,7 +423,7 @@ static void sport_shutdown(struct uart_port *port)
}
static void sport_set_termios(struct uart_port *port,
- struct termios *termios, struct termios *old)
+ struct ktermios *termios, struct ktermios *old)
{
pr_debug("%s enter, c_cflag:%08x\n", __func__, termios->c_cflag);
uart_update_timeout(port, CS8 ,port->uartclk);
OpenPOWER on IntegriCloud